Pressure-regulator.



H. E. SHAWVER.

1 PRESSURE REGULATOR, APPLIOATION FILED SEPT. a, 1903. RENEWED MAY 23,1912. 1,042,980, Y Patented 0ct.29,1912.

3 SHEETSSHEET 1.

COLUMBIA PLANOGRAPH c0. WASHINGTON. n. c.

H. E. SHAWVER. PRESSURE REGULATOR. APPLIOATION FILED SEPT.'3, 1908.RENEWED MAY 23, 1912. 1,042,980. Patented Oct. 29, 1912.

3 SHEIETSSHEET 2.

' v animator wihwaiu 7 w ll/V H. E. SHAWVER. PRESSURE REGULATOR.APPLICATION FILED SEPT. s, 1908. RENEWED mtzs, 1912.

1,042,980, Patented Oct. 29, 1912.

3 SHEETSSHEET 3.

HARVEY E. SHAWVER, OF LEWIS'IOWN, ILLINOIS.

PRESSURE-REGULATOR.

Specification of Letters Patent.

Patented Oct. 29,1912.

Application filed September 3, 1908, Serial'No. 451,604. Renewed May 23,1912. Serial No. 699,284.

To all whom it may concern:

Be it known that I, HARVEY E. SHAwvER, a citizen of the United States,residing at Lewistown, in the county of Fulton and State of Illinois,have invented new and useful Improvements in Pressure-Regulators, ofwhich the following is a specification.

This invention relates to pressure regulators, and more particularly onefor pneumatic water supply systems. In such systems the water is pumpedinto a closed tank known as the pressure tank, and as it rises in saidtank the air therein is compressed and thus utilized to force the waterto its destination.

The object of the present invention is to provide improved means forautomatically maintaining a predetermined pressure in the pressure tank,and to this end the invention consists in a mechanism for stopping thepump when the pressure rises above a certain point, and for starting thepump when the pressure drops below the same.

In the accompanying drawings, Figure 1 is an elevation of the invention.Fig. 2 is a sectional View of the globe hereinafter referred to. Fig. 3is a detail in perspective. Fig. 4 is a sectional detail. Fig. 5 is adiagrammatic elevation of a modified form of regulator. Fig. 6 is adetail in perspective of a portion of the mechanism shown in Fig. 5.Fig. 7 is a vertical transverse sectional view through the valvecont-rolling mechanism, illustrating means for supporting the same. Fig.8 is a vertical section on the line 88 of Fig. 7 showingmeans which maybe employed for limiting the movement of the swinging arms 19 and 22.Fig. 9 is a top plan view of the device illustrated in Fig. 8.

Referring specifically to the drawings, 10 designates the pressure watersupply tank and 11 the pump for supplying the tank. The pump is operatedby a suit-able motor, a hydraulic motor 12 belng shown, the water foroperating the same entering through a pipe 13 and discharging through apipe 14. These pipes are connected to a by pass 15 containing a valve16, the arrangement being such that when the valve is open the waterflows through the by pass, and when the valve is closed the water flowsto the motor and operates the same.

The valve 16 is provided with a projectmg stem 17, and to this stem isconnected a hollow coupling 18. From one side of the coupling 18projects a rod 19, which is provided with an adjustably mounted weight20, the latter being held at ad ustment by a set screw 21. From theopposite side of the coupling a pipe 22 projects, and said pipe isadapted to communicate with the interior of the hollow coupling 18. Tothe extremity of this pipe is connected a coupling 23 which carries ahollow globe 24, the interior of which communicates with the pipe 22.The coupling 28 may be provided with a drain valve 25 as illustrated inFigs. 1, 3 and 5 of the drawings.

The coupling 18 is provided with an additional pipe 26, which in turncommunicates with the pressure tank 10. This pipe extends at rightangles to the rod 19 and pipe 22 and is in axial alinement with thevalve stem 17 so that it may serve as a pivotal support for the casing18. A suitable stuffing box 27, having a packing is provided to preventleakage, and the pipe 26 is provided with a suitable air cook 28. On theby pass pipe, below the casing of the valve 16, in the deviceillustrated in Figs. 1 and 3 of the drawings, are stops 29 for limitingthe swing of the rod 19 and pipe 22.

The operation of the apparatus is as follows: The rod 19 and pipe 22 actas a lever, and when the weight 20 overbalances the globe 24C, or viceversa, the lever swings and rocks the casing 18, and as the latter isconnected with the valve stem 17 the valve 16 is operated by the rockingof the casing. The weight 20 is adjusted on the rod 19 so that it willbalance the globe 24: and the weight of: the water therein when thedesired pressure in the tank 10 is attained. An increase of pressurewithin the tank causes more water to enter the globe through the pipe26, c0upling 18 and pipe 22, whereby the weight 20 is overbalanced andthe lever swings in the direction to open the valve. The water foroperating motor then thereto and the pump is started to restore thepressure in the tank.

By the apparatus herein described, it will be noted, the desiredpressure will be automatically maintained, and as the apparatus issimple in construction and has no complicated parts to get out of orderit is efiicient and reliable in operation.

In Figs. 5 and 6 there is shown a modified form of the apparatusdesigned to be used in connection with an electric motor or internalcombustion engine for operating the pump which supplies the pressuretank. In these views the numeral 30 designates an electric motor orinternal combustion engine, and 31 are the wires for carrying thecurrent thereto from a suitable source designated by the numeral 32, orsaid wires may be of the ignition circuit of an internal combustionengine, one of the wires is con nected to one of the contacts 33 of acircuit breaker, and the other wire is connected to a second contact 34.The contact 33 is pivoted to a base 35, and is connected to the coupling18 in such a manner that it will swing therewith when said coupling isrocked by the lever as heretofore described. The contact 34 is alsopivoted to the base 35 and is formed with a finger 36 which isengageable by a hook 37 on the contact 33, and when so engaged thecircuit is closed. When the parts are disengaged to break the circuitthe contact 34 swings downwardly against a stop pin 38 projecting fromthe base. The base is also provided with stops 39 for limiting the swingof the lever formed by the rod 19 and pipe 22. It is of course to beunderstood, that the contacts are insulated from each other at theirbearings.

The modified form of the apparatus operates as follows: Excessivepressure in the tank causes the lever to tilt as already described, andas it is connected to the contact 33 the hook 37 thereof will swing awayfrom the finger 36 of the contact 34, and the lat ter swings downwardlyagainst the stop 38, as shown by the dotted lines in Fig. 5, whereby thecircuit is opened and the motor or engine stopped. 1Vhen the pressuredrops below the desired point the contact will be brought togethermanually to close the circuit, whereby the operation of the motor orengine is resumed to actuate the pump.

In Figs. 7, 8 and 9 I have illustrated mechanism for effectivelysupporting the coupling 18 as well as limiting the swing of the lever.In these figures the coupling 18 is provided with a projecting stem 40,having a central passage communicating with the hollow coupling. Thisprojection 40 is smooth and is adapted for the reception of a packingwasher 41. This washer 41 is adapted for engagement with a packing box42 which in turn is connected with the pipe 26. The packing box 42 ispro vided with an annular groove or recess, and this recess is adaptedfor the reception of the right angularly bent or oll'set members 43 of apair of bracing arms 44. These bracing arms 44 are each provided with anopening adapted for the reception of the pipes 15 and are also providedwith smaller orifices adapted for the reception of a securing element 46by which the plates or arms 44 are pressed tightly against the valve 16.The offset projecting aortions 43 of these plates 44 are each centrallyprovided with a semi-cylindrical centrally arranged cutaway portionadapted to engage the annular recess of the packing box 42. The 011 setportions 43 of the plates are also provided with oppositely extendingarms, each of which being provided with a suitable alining perforationadapted for the reception of securing members by which the front or faceof the members is connected and retained in position within the annularrecess of the packing box 42. By this construction it will be noted thatthe arms or plates 44 efiectively support the projecting portions of theoperating device while in no way interfering with the movements of theparts.

Slidably mounted upon the rod 19 is a cone faced stop member 47. Thismember 47 is provided with a suitable thumb screw 48, by which it may beadjustably secured upon the rod 19, and it will be noted that when themember 47 is adjusted upon the rod 19 it will contact with either of thearms or plates 44 as the lever is swung, thereby regulating the throw ofthe valve 16.

Having thus fully described the invention what is claimed as new is:

1. The combination with a tank, a pump discharging into the tank, afluid motor for operating the pump, of a pressure regulator, saidregulator comprising a bypass communicating wit-l1 the motor andprovided with a valve, a stem upon the valve having a hollow member anda weighted extension, a globe shaped hollow member connected to thehollow member of the stem and provided with a valve, and an outlet pipeconnected with the tank and communicating with the hollow member of thestem.

2. In combination with a tank, a pump connected with the tank, and afluid motor for the pump, of a bypass connected with the tanlc and thehollow member of the 10 the inlet pipe of the motor, a valve upon thestem, substantially as described.

bypass a stem upon the valve having a hol- In testimony whereof I afiixmy signature low member and a Weighted extension, a in presence of twowitnesses. globe shaped hollow member connected with HARVEY E SHAWVERthe hollow member of the stem, a drain valve for the globe shaped hollowmember, means Witnesses:

for adjusting the weighted extension of the R. E. GRIFFITH, valve stem,and a communication between ALMA BORDNER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

